I don't think they will "install", they'll just "cache" like on XBOX 360 (if you have an HDD and the game supports it) or XBOX 1. The BR disks themselves are 25GB, most XBOX 360 games are averaging, what, 6-7.4GBs? If you used the PC "installing" method, 2-3 games would fill up the 20GB hdd...